[1264] Barth, The Religions of India (Eng. tr.); Hopkins, Religions of India; Hillebrandt, Vedische Mythologie; Macdonell, Vedic Mythology, Bloomfield, Religion of the Veda. See the bibliography in Hopkins, op. cit., p. 573 ff.
[1265] Rig-Veda, viii, 41, 1. 7; i, 23, 5 (ṛta, 'order').
[1266] Rig-Veda, x, 121.
[1267] Early imagination apparently connected the future social life of gods and men not with the calm sky, but with the upper region that was the scene of constant and awful movements. But the ground of the choice of Indra as lord of heaven rests in the obscurity of primeval times.
[1268] For economic reasons a rain-god must generally be prominent and popular.
[1269] § 703.
[1270] The history of this distinction between Dyaus and Varuna is lost in the obscurity of the beginnings.
[1271] This conception appears in germinal form in Rig-Veda, v, 84, vi, 515, but is not there or elsewhere developed.
[1272] Macdonell, Vedic Mythology, § 20.
[1273] Cf. Hastings, Encyclopædia of Religion and Ethics, article "Bengal," p. 491 ff., and the references there given to authorities.